where did Gaelic originated?

i'm just curious, where did the Gaelic language came from, and what's the difference between the scottish and irish gaelic?
i'd like to learn how to speak your language, but i'm having a problem regarding it's pronunciation.
i think my english grammar sucks, i hope some of you will understand what i'm trying to say here.

Scottish Gaelic came from Northern Ireland and over the centuries evolved into a variety of dialects which were (are?) still spoken in Scotland and until recently in the Isle of Man. Where it came from before Ireland is not really known although it is connected to Celtic languages such as Welsh and old Gaulish.

If you are interested in learning the language the best thing to do would be to contact an organisation such as CLI (Comann an Luchd Ionnsachaidh). They have their own web site, I can't think what it is but if you go to Google and type in CLI I'm sure you'd get it. Their are several other organisations and sites on the web which you could find by typing Gaelic etc.

Gaelic is essentially the language of the Celtic peoples who inhabited much of western Europe in pre-Roman times. Scots Gaelic came to Scotland by way of Ireland but it is closely related to the languages of the other Celts who still exist today in Ireland, Wales, The Isle Of Man, Cornwall and Brittany.

Gaelic is a derivative of Q-Celtic, the language of the Goidelic Celts, where Welsh is derived from P-Celtic, the language of the Brythonic Celts. Both P & Q Celtic are deviations of the language prior to the split of the Celts into two tribes, long before the move into the British Isles so of course all the languages are somewhat similar.One major factor in the development of Gaelic was the amalgamation of the celts and the native people to form the Picts. (it gets kind of foggy whether they whether the native people were called the Picts before the merge with the Goidels or after, depends on who you talk to)

Although many beleive Gaelic to have come from Ireland this is true just to an extent. Recent archeological evidence suggests that there were people and Gaelic was spoken throughout Western Scotland before the period we originally assumed it arrived in the country from Ireland.

Although many beleive Gaelic to have come from Ireland this is true just to an extent. Recent archeological evidence suggests that there were people and Gaelic was spoken throughout Western Scotland before the period we originally assumed it arrived in the country from Ireland.

"If the Q-Celtic Gaels, or their ancestors, came to Ireland from the continent what was their route? They may well have travelled via Britain [there is no direct evidence, of course] and if they did are they not likely to have crossed into Ireland at the shortest crossing point, that between south-west Scotland and north-east Ulster; which archaeology has shown to be a favoured crossing point for numerous cultural imports to Ireland?"
(Source: The Edinburgh Companion to the Gaelic Language - A History of Gaelic to 1800 by Colm Ó Baoill, 2010).

The Human Journey: The Indo-Europeans
if you study the origins of the Celts you end up in the Danube Vally around 3500bc and before that we ruled the pontic steppes with the rest of the Scythians. domesticating horses and inventing the wheel around 5000 bc.